<template>
  <div class="login_wrapper">
    <div class="login_box">
      <!-- 头像区域 -->
      <div class="avatar_container">
        <img src="../assets/logo.png">
      </div>
      <!-- 表单区域 -->
      <el-form ref="loginFormRef" :model="loginForm" :rules="loginFormRules" label-width="0px" class="login_form">
        <el-form-item prop="username">
          <el-input v-model="loginForm.username" prefix-icon="el-icon-user-solid"></el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input v-model="loginForm.password" prefix-icon="el-icon-key"></el-input>
        </el-form-item>
        <el-form-item class="btns">
          <el-button type="primary" plain="" @click="login">登录</el-button>
          <el-button type="info" plain="" @click="reset">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data () {
    return {
      // 表单的数据绑定对象
      loginForm: {
        username: 'admin',
        password: '123456'
      },
      // 表单验证规则对象
      loginFormRules: {
        username: [
          { required: true, message: '请输入账号', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 16, message: '长度在 6 到 16 个字符', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    reset () {
      console.log(this)
      this.$refs.loginFormRef.resetFields()
    },
    login () {
      this.$refs.loginFormRef.validate(async (valid) => {
        console.log(valid)
        if (!valid) return
        const { data: res } = await this.$http.post('/login', this.loginForm)
        console.log(res)
        if (res.meta.status !== 200) return this.$message.error('登录失败')
        this.$message.success('登录成功')
        // 保存token
        window.sessionStorage.setItem('token', res.data.token)
        // 跳转到后台主页
        this.$router.push('/home')
      })
    }
  }
}
</script>

<style lang="less" scoped>
.login_wrapper{
  background-color: #2b4b6b;
  height: 100%;
  .login_box{
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);
    .avatar_container{
      width: 130px;
      height: 130px;
      border: 1px solid #eee;
      border-radius: 50%;
      padding: 10px;
      background-color: #fff;
      position: absolute;
      left: 50%;
      transform: translate(-50%,-50%);
      box-shadow: 0 0 10px #ddd;
      img{
        width: 100%;
        height: 100%;
        border-radius: 50%;
        background-color: #ddd;
      }
    }
  }
}
.login_form {
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
}
.btns {
    display: flex;
    justify-content: flex-end;
}
</style>
